Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7795486 | Integrated production of FCC-produced C3 and cumene Processing schemes and arrangements are provided for obtaining propylene and propane via the catalytic cracking of a heavy hydrocarbon feedstock and converting the propylene into cumene without separating the propane from the propane/propylene feed stream. The discl... | 09/14/2010 |
| 7795485 | Integrated production of FCC-produced C2 and ethyl benzene Processing schemes and arrangements are provided for obtaining ethylene and ethane via the catalytic cracking of a heavy hydrocarbon feedstock and converting the ethylene into ethyl benzene without separating the ethane from the feed stream. The disclosed processing... | 09/14/2010 |
| 7411101 | Production of alkylaromatic compounds A process for producing a monoalkylation aromatic product, such as ethylbenzene and cumene, utilizing an alkylation reactor zone and a transalkylation zone in series or a combined alkylation and transkylation reactor zone. ... | 08/12/2008 |
| 7396968 | Process and apparatus for alkylation of aromatic with olefin using impure aromatic recycle Processes and apparatus for the alkylation of aromatic compound with mono-olefin aliphatic compound in the presence of solid alkylation catalyst use a lights distillation for obtaining desired selectivities to arylalkane in a energy efficient manner. The processes a... | 07/08/2008 |
| 7320745 | Energy efficient method for exothermic reactions An energy efficient process scheme for a highly exothermic reaction-distillation system in which the reactor is external to the distillation column and the feed to the reactor is a mixture of at least one liquid product stream from the distillation column with or wi... | 01/22/2008 |
| 7267746 | Dividing wall distillation column control apparatus A control apparatus and control method for controlling the separation in a dividing wall distillation column of at least two feeds into at least three products is disclosed. The apparatus uses a temperature measuring device to measure the temperature of fluid in the... | 09/11/2007 |
| RE39222 | Process for preparing 2,6-dialkylnaphthalene A process for producing 2,6-dialkylnaphthalene from a hydrocarbon feedstock that contains at least one component selected from the group consisting of dialkylnaphthalene isomers, monoalkylnaphthalene isomers, polyalkylnaphthalenes, and naphthalene, is provided that ... | 08/01/2006 |
| 6762334 | Alkylaromatic process with removal of aromatic byproducts using efficient distillation A process for the production of alkylaromatic hydrocarbons by alkylating aromatic hydrocarbons with olefinic hydrocarbons is disclosed. The olefinic hydrocarbons are produced by dehydrogenating paraffinic hydrocarbons. Aromatic byproducts formed in dehydrogenation a... | 07/13/2004 |
| 6642425 | Reactive distillation process for the alkylation of aromatic hydrocarbons A unified process for reactive distillation under pressure for the alkylation of light aromatic hydrocarbons such as benzene and cumene with straight chain C6 -C18 olefins using a solid acid alkylation catalyst supported in the reflu... | 11/04/2003 |
| 6525236 | Membrane-augmented manufacture of cumene A process for manufacturing cumene by reacting propylene with benzene, including treating a vent stream from the reaction zone, to recover propylene for return to the reactor. The process involves using a gas separation membrane to separate propylene from... | 02/25/2003 |
| 6512153 | Process for the alkylation of aromatic compounds Process for the alkylation of aromatic compounds by the reaction of the aromatic compound of interest with isopropanol, alone or mixed with propylene, wherein the reaction is carried out in the presence of a catalytic composition based on zeolite, under m... | 01/28/2003 |
| 6417420 | Alkylaromatic process with removal of aromatic byproducts using efficient distillation A process for the production of alkylaromatic hydrocarbons by alkylating aromatic hydrocarbons with olefinic hydrocarbons is disclosed. The olefinic hydrocarbons are produced by dehydrogenating paraffinic hydrocarbons. Aromatic byproducts formed in dehydr... | 07/09/2002 |
| 6339179 | Production of alkyl aromatics by passing transalkylation effluent to alkylation zone and to product recovery zone A process for producing alkyl aromatics using a transalkylation reaction zone and an alkylation reaction zone is disclosed. One portion of the transalkylation reaction zone effluent passes to an alkylation reaction zone where an aromatic substrate is alky... | 01/15/2002 |
| 6222084 | Gas phase alkylation-liquid phase transalkylation process Process for the production of ethylbenzene by alkylation over a silicalite alkylation catalyst with subsequent transalkylation of diethylbenzene with the alkylation catalyst and conditions selected to retard xylene production and also heavies production. ... | 04/24/2001 |
| 6166281 | Alkylation of benzene to form linear alkylbenzenes using fluorine-containing mordenites This invention is directed to a fluorine-containing mordenite catalyst and use thereof in the manufacture of linear alkylbenzene (LAB) by alkylation of benzene with an olefin. The paraffin may have from about 10 to 14 carbons. The fluorine-containing mord... | 12/26/2000 |
| 6133492 | Alkylation of benzene to form linear alkylbenzenes using fluorine-containing mordenites This invention is directed to a fluorine-containing mordenite catalyst and use thereof in the manufacture of linear alkylbenzene (LAB) by alkylation of benzene with an olefin. The olefin may have from about 10 to 14 carbons. The fluorine-containing morden... | 10/17/2000 |
| 6121501 | Process for preparing 2,6-dialkylnaphthalene A process for producing 2,6-dialkylnaphthalene from a hydrocarbon feedstock that contains at least one component selected from the group consisting of dialkylnaphthalene isomers, monoalkylnaphthalene isomers, polyalkylnaphthalenes, and naphthalene, is pro... | 09/19/2000 |
| 6096935 | Production of alkyl aromatics by passing transalkylation effluent to alkylation zone A process for producing alkyl aromatics using a transalkylation reaction zone and an alkylation reaction zone is disclosed. The transalkylation reaction zone effluent passes to the alkylation reaction zone where aromatics in the transalkylation reaction z... | 08/01/2000 |
| 6069285 | Alkylaromatic process using a solid alkylation catalyst and a benzene rectifier An integrated alkylaromatic process using a solid alkylation catalyst and an aromatic rectifier is disclosed for alkylating aromatics with olefins and for regenerating the solid alkylation catalyst. The aromatic rectifier produces a relatively low-purity ... | 05/30/2000 |
| 6013848 | Conversion of heavy polyalkylaromatic compounds A process for the conversion of heavy bottoms from aromatic alkylation known as "flux oil" and containing heavier polyalkylaromatic compounds, in which the heavier polyalkylates are fed along with aromatic to a reactor containing an acidic zeolite catalys... | 01/11/2000 |
| 6008422 | Alkylation process using interbed recycling of cooled reactor effluent A process for producing alkylaromatics using a multibed alkylation reaction zone is disclosed. The alkylation reaction zone effluent is divided into three portions, the first being recirculated to the inlet of the reaction zone, the second being cooled an... | 12/28/1999 |
| 5998684 | Recovery process for wet aromatic alkylation and dry aromatic transalkylation A separation arrangement for a cumene process that operates with a relatively wet feed to an alkylation zone and relatively dry feed to a transalkylation zone reduces utilities and capital expenses for the separation and recycle of distinct wet and dry co... | 12/07/1999 |
| 5962758 | Process of producing ethylbenzene using alkylation and transalkylation with propylbenzene destruction Ethylbenzene is produced from benzene and ethylene in an alkylation reactor wherein the feedstocks also contain propylbenzenes and/or components that produce propylbenzene. Polyethylbenzenes are also produced in the process. The ethylbenzene product and u... | 10/05/1999 |
| 5959168 | Zeolite-based ethylabenzene process adaptable to an aluminum chloride-based ethylbenzene plant A zeolite-based ethylbenzene process which is suitable for retrofitting aluminum chloride-based ethylbenzene plants. The process involves alkylating benzene with ethylene in an alkylation zone in the presence of zeolite beta or Y or an MCM zeolite so as t... | 09/28/1999 |
| 5955642 | Gas phase alkylation-liquid transalkylation process An alkylation/transalkylation process involving vapor phase alkylation of a benzene feedstock in a multi-stage alkylation zone having a plurality of series connected catalyst beds containing a pentasil aromatic alkylation catalyst, such as silicalite, cou... | 09/21/1999 |
| 5900518 | Heat integration in alkylation/transalkylation process The present invention addresses heat integration in an alkylation/transalkylation process involving alkylation of an aromatic substrate with a C2 -C4 alklating agent coupled with separation to recover a monoalkylated aromatic product... | 05/04/1999 |
| 5877384 | Apparatus and process for separating reaction effluent in the manufacture of cumene An apparatus and process for separating propane and benzene from alkylation reaction products in cumene production. An integrated fractionation tower combines the functions of propane separation, recycle benzene recovery as well as system dewatering to el... | 03/02/1999 |
| 5877370 | Method for minimizing diarylalkane formation in alkylation of aromatics by olefins by zeolite beta Reduction of the amount of 1,1-diphenylethane formed in the production of ethylbenzene by alkylation of benzene with ethylene can be effected by alkylating at a low concentration of ethylene. This invention allows operation at a low molar ratio of phenyl ... | 03/02/1999 |
| 5856606 | Turbulent bed solid catalyst hydrocarbon alkylation process Paraffins or other hydrocarbons are alkylated in a process featuring a reaction zone containing a pool of liquid maintained at its boiling point and containing a suspended solid catalyst, which allows the heat of reaction to vaporize a portion of the liqu... | 01/05/1999 |
| 5847253 | Alkylation-transalkylation process using stripping to produce a dry transalkylation feed A process for the production of alkylaromatic hydrocarbons that operates with a high water content in an alkylation zone and a low water content in a transalkylation zone is disclosed. An aromatic feed and an acyclic feed are first passed through the alky... | 12/08/1998 |
| 5744670 | Process for preparing dialkylnaphthalene A process for producing alkylnaphthalene from a feedstock comprising isomers of dialkylnaphthalene and naphthalene by contacting the feedstock with a catalyst composition, in which the process comprising transalkylation between isomers of dialkylnaphthale... | 04/28/1998 |
| 5600049 | Process for depropanizing benzene In the alkylation of benzene with propylene in a distillation column reactor to produce cumene the overheads from the distillation reactor are fed to a depropanizer where the unreacted benzene is separated from C3 's. Liquid propylene feed for ... | 02/04/1997 |
| 5489732 | Fluidized solid bed motor fuel alkylation process Hydrocarbons are alkylated in a fluidized riser-reactor using a solid catalyst which is regenerated within the process by contact with hydrogen. The alkylation and regeneration steps are separated to prevent the admixture of hydrogen and any olefins prese... | 02/06/1996 |
| 5362377 | Conversion of olefins by catalytic distillation Ethers suitable for use as high octane oxygenate additives for motor fuels are produced by a catalytic distillation process wherein a mixture of C4 -plus isoolefin(s) and an alcohol are recovered from a catalytic distillation zone as an overhea... | 11/08/1994 |
| 5336821 | Alkylation process with reactor effluent heat recovery A process for the alkylation of aromatic hydrocarbons such as cumene and ethylbenzene is disclosed. A portion of the effluent stream from an alkylation reactor passes through an indirect heat exchanger to transfer heat to a flashed stream containing the p... | 08/09/1994 |
| 5185486 | Method of reducing the benzene content of gasolines The benzene content of hydrocarbon gasolines is accomplished by (a) fractionating at least one hydrocarbon gasoline into a light fraction A, with an increased benzene content, and a heavy fraction B, with a reduced benzene content; (b) contacting the ligh... | 02/09/1993 |
| 5177283 | Hydrocarbon conversion process Alkylaromatic hydrocarbons are produced in a process which comprises concentrating a feed aromatic hydrocarbon into a sidecut stream removed from a fractionation column. A feed acyclic olefin is then admixed with the aromatic hydrocarbon and passed throug... | 01/05/1993 |
| 5138113 | Process for producing alkylaromatic hydrocarbons from natural gas The invention relates to a process for producing alkylaromatic hydrocarbons from natural gas containing methane, characterized in that it comprises the following three successive stages: 1) thermal cracking of the natural gas with forming of hydrogen and ... | 08/11/1992 |
| 5118872 | Process for conducting heterogeneous chemical reactions There is provided a new process for conducting heterogeneous chemical reactions in which a particulate catalyst is slurried in one of the reactant streams and fed into a distillation column reactor in a distillation reaction zone. The distillation reactio... | 06/02/1992 |
| 5105041 | Effluent separation method for aromatic hydrocarbon alkylation process A process for the production of alkylaromatic hydrocarbons uses a working fluid to reduce the costs of separating an unreacted aromatic feed substrate from aromatic hydrocarbon products. Unreacted aromatic substrate is combined with a light hydrocarbon, s... | 04/14/1992 |
